Tattoo machine



FIG. 1 is a rear perspective view of a tattoo machine, showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a right-side elevational view thereof, the left-side elevational view being a mirror image thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The broken lines showing knobs in the figures depict environmental matter and form no part of the claimed design. 

CLAIM I claim the ornamental design for a tattoo machine, as shown and described. 